Simple wrapper observer that takes several observers, and calls each one for each event. More...

#include "llvm/CodeGen/GlobalISel/GISelChangeObserver.h"

Inheritance diagram for llvm::GISelObserverWrapper:

Public Member Functions
	GISelObserverWrapper ()=default

	GISelObserverWrapper (ArrayRef< GISelChangeObserver * > Obs)

void	addObserver (GISelChangeObserver *O)

void	removeObserver (GISelChangeObserver *O)

void	clearObservers ()

void	erasingInstr (MachineInstr &MI) override
	An instruction is about to be erased.

void	createdInstr (MachineInstr &MI) override
	An instruction has been created and inserted into the function.

void	changingInstr (MachineInstr &MI) override
	This instruction is about to be mutated in some way.

void	changedInstr (MachineInstr &MI) override
	This instruction was mutated in some way.

void	MF_HandleInsertion (MachineInstr &MI) override
	Callback after an insertion. This should not modify the MI directly.

void	MF_HandleRemoval (MachineInstr &MI) override
	Callback before a removal. This should not modify the MI directly.

Public Member Functions inherited from llvm::MachineFunction::Delegate
virtual	~Delegate ()=default

virtual void	MF_HandleInsertion (MachineInstr &MI)=0
	Callback after an insertion. This should not modify the MI directly.

virtual void	MF_HandleRemoval (MachineInstr &MI)=0
	Callback before a removal. This should not modify the MI directly.

virtual void	MF_HandleChangeDesc (MachineInstr &MI, const MCInstrDesc &TID)
	Callback before changing MCInstrDesc.

Public Member Functions inherited from llvm::GISelChangeObserver
virtual	~GISelChangeObserver ()=default

virtual void	erasingInstr (MachineInstr &MI)=0
	An instruction is about to be erased.

virtual void	createdInstr (MachineInstr &MI)=0
	An instruction has been created and inserted into the function.

virtual void	changingInstr (MachineInstr &MI)=0
	This instruction is about to be mutated in some way.

virtual void	changedInstr (MachineInstr &MI)=0
	This instruction was mutated in some way.

void	changingAllUsesOfReg (const MachineRegisterInfo &MRI, Register Reg)
	All the instructions using the given register are being changed.

void	finishedChangingAllUsesOfReg ()
	All instructions reported as changing by changingAllUsesOfReg() have finished being changed.

Detailed Description

Simple wrapper observer that takes several observers, and calls each one for each event.

If there are multiple observers (say CSE, Legalizer, Combiner), it's sufficient to register this to the machine function as the delegate.

Definition at line 66 of file GISelChangeObserver.h.

Constructor & Destructor Documentation

◆ GISelObserverWrapper() [1/2]

llvm::GISelObserverWrapper::GISelObserverWrapper ( )

default

◆ GISelObserverWrapper() [2/2]

llvm::GISelObserverWrapper::GISelObserverWrapper ( ArrayRef< GISelChangeObserver * > Obs )

inline

Definition at line 72 of file GISelChangeObserver.h.

Member Function Documentation

◆ addObserver()

void llvm::GISelObserverWrapper::addObserver ( GISelChangeObserver * O )

inline

Definition at line 74 of file GISelChangeObserver.h.

References llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by llvm::Legalizer::legalizeMachineFunction(), and llvm::IRTranslator::runOnMachineFunction().

◆ changedInstr()

void llvm::GISelObserverWrapper::changedInstr ( MachineInstr & MI )

inlineoverridevirtual

This instruction was mutated in some way.

Implements llvm::GISelChangeObserver.

Definition at line 98 of file GISelChangeObserver.h.

References MI.

Referenced by llvm::LegalizationArtifactCombiner::tryCombineInstruction(), and llvm::LegalizationArtifactCombiner::tryCombineZExt().

◆ changingInstr()

void llvm::GISelObserverWrapper::changingInstr ( MachineInstr & MI )

inlineoverridevirtual

This instruction is about to be mutated in some way.

Implements llvm::GISelChangeObserver.

Definition at line 94 of file GISelChangeObserver.h.

References MI.

Referenced by llvm::LegalizationArtifactCombiner::tryCombineZExt().

◆ clearObservers()

void llvm::GISelObserverWrapper::clearObservers ( )

inline

Definition at line 83 of file GISelChangeObserver.h.

References llvm::SmallVectorImpl< T >::clear().

◆ createdInstr()

void llvm::GISelObserverWrapper::createdInstr ( MachineInstr & MI )

inlineoverridevirtual

An instruction has been created and inserted into the function.

Note that the instruction might not be a fully fledged instruction at this point and won't be if the MachineFunction::Delegate is calling it. This is because the delegate only sees the construction of the MachineInstr before operands have been added.

Implements llvm::GISelChangeObserver.

Definition at line 90 of file GISelChangeObserver.h.

References MI.

Referenced by MF_HandleInsertion().